Patents by Inventor Jae Ky Roh

Jae Ky Roh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10096756
    Abstract: A side view LED package for a backlight unit includes a package body having a cavity with an inclined inner sidewall, first and second lead frames arranged in the package body, the cavity of the package body exposing a portion of at least one of the first and second lead frames placed in a bottom of the cavity to outside, a light emitting diode chip mounted on the bottom of the cavity to be electrically connected to the first and second lead frames, and a transparent encapsulant arranged in the cavity surrounding the light emitting diode chip. The cavity has a depth larger than a mounting height of the light emitting diode chip and not exceeding six times of the mounting height. The height of the sidewall is shortened to improve beam angle characteristics of emission light, increase light quantity, and prevent a molding defect of the sidewall.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: October 9, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Wook Kim, Yoon Suk Han, Young Jae Song, Byung Man Kim, Jae Ky Roh, Seong Jae Hong
  • Publication number: 20160315239
    Abstract: A side view LED package for a backlight unit includes a package body having a cavity with an inclined inner sidewall, first and second lead frames arranged in the package body, the cavity of the package body exposing a portion of at least one of the first and second lead frames placed in a bottom of the cavity to outside, a light emitting diode chip mounted on the bottom of the cavity to be electrically connected to the first and second lead frames, and a transparent encapsulant arranged in the cavity surrounding the light emitting diode chip. The cavity has a depth larger than a mounting height of the light emitting diode chip and not exceeding six times of the mounting height. The height of the sidewall is shortened to improve beam angle characteristics of emission light, increase light quantity, and prevent a molding defect of the sidewall.
    Type: Application
    Filed: July 5, 2016
    Publication date: October 27, 2016
    Inventors: Chang Wook Kim, Yoon Suk Han, Young Jae Song, Byung Man Kim, Jae Ky Roh, Seong Jae Hong
  • Patent number: 7846754
    Abstract: A high power Light Emitting Diode (LED) package and a method of producing the same. The high power LED package according to the present invention includes a plurality of light emitting diode chips, a first lead frame with the light emitting diode chips mounted thereon, and a second lead frame disposed at a predetermined interval from the first lead frame. The LED package also includes a package body fixing the first and second lead frames and bonding wires for electrically connecting the plurality of LED chips with upward-inclined inner side walls thereof and a second reflecting part surrounding the entire plurality of LED chips with an upward-inclined inner side wall thereof.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: December 7, 2010
    Assignee: Samsung LED Co., Ltd.
    Inventors: Kyung Seob Oh, Jae Ky Roh, Jung Kyu Park, Jong Hwan Baek, Seung Hwan Choi
  • Publication number: 20090321779
    Abstract: A side view LED package for a backlight unit includes a package body having a cavity with an inclined inner sidewall, first and second lead frames arranged in the package body, the cavity of the package body exposing a portion of at least one of the first and second lead frames placed in a bottom of the cavity to outside, a light emitting diode chip mounted on the bottom of the cavity to be electrically connected to the first and second lead frames, and a transparent encapsulant arranged in the cavity surrounding the light emitting diode chip. The cavity has a depth larger than a mounting height of the light emitting diode chip and not exceeding six times of the mounting height. The height of the sidewall is shortened to improve beam angle characteristics of emission light, increase light quantity, and prevent a molding defect of the sidewall.
    Type: Application
    Filed: August 28, 2009
    Publication date: December 31, 2009
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Chang Wook KIM, Yoon Suk HAN, Young Jea SONG, Byung Man KIM, Jae Ky ROH, Seong Jae HONG
  • Publication number: 20090283792
    Abstract: A side view LED package for a backlight unit includes a package body having a cavity with an inclined inner sidewall, first and second lead frames arranged in the package body, the cavity of the package body exposing a portion of at least one of the first and second lead frames placed in a bottom of the cavity to outside, a light emitting diode chip mounted on the bottom of the cavity to be electrically connected to the first and second lead frames, and a transparent encapsulant arranged in the cavity surrounding the light emitting diode chip. The cavity has a depth larger than a mounting height of the light emitting diode chip and not exceeding six times of the mounting height. The height of the sidewall is shortened to improve beam angle characteristics of emission light, increase light quantity, and prevent a molding defect of the sidewall.
    Type: Application
    Filed: July 28, 2009
    Publication date: November 19, 2009
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Chang Wook KIM, Yoon Suk Han, Young Jae Song, Byung Man Kim, Jae Ky Roh, Seong Jae Hong
  • Patent number: 7598528
    Abstract: A high power Light Emitting Diode (LED) package and a method of producing the same. The high power LED package according to the present invention includes a plurality of light emitting diode chips, a first lead frame with the light emitting diode chips mounted thereon, and a second lead frame disposed at a predetermined interval from the first lead frame. The LED package also includes a package body fixing the first and second lead frames and bonding wires for electrically connecting the plurality of LED chips. The package body includes at least one first reflecting part separately surrounding each of the plurality of LED chips with upward-inclined inner side walls thereof and a second reflecting part surrounding the entire plurality of LED chips with an upward-inclined inner side wall thereof.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: October 6, 2009
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Kyung Seob Oh, Jae Ky Roh, Jung Kyu Park, Jong Hwan Baek, Seung Hwan Choi
  • Publication number: 20080042151
    Abstract: A high power Light Emitting Diode (LED) package and a method of producing the same. The high power LED package according to the present invention includes a plurality of light emitting diode chips, a first lead frame with the light emitting diode chips mounted thereon, and a second lead frame disposed at a predetermined interval from the first lead frame. The LED package also includes a package body fixing the first and second lead frames and bonding wires for electrically connecting the plurality of LED chips. The package body includes at least one first reflecting part separately surrounding each of the plurality of LED chips with upward-inclined inner side walls thereof and a second reflecting part surrounding the entire plurality of LED chips with an upward-inclined inner side wall thereof.
    Type: Application
    Filed: June 13, 2007
    Publication date: February 21, 2008
    Inventors: Kyung Seob Oh, Jae Ky Roh, Jung Kyu Park, Jong Hwan Baek, Seung Hwan Choi
  • Patent number: 5979739
    Abstract: An apparatus for bonding semiconductor dies to lead frame strips, each of the lead frame strips having a plurality of adjacently spaced lead frame units. The apparatus includes at least two bond units, each attaching the dies to one of the lead frame strips at a time and one die supply unit supplying the dies alternately to the bond units. The apparatus also includes at least two lead frame strip supply units, each supplying the lead frame strips to respective ones of the bond units.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: November 9, 1999
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ho Tae Jin, Jae Ky Roh, Sung Bok Hong, Hee Kook Choi
  • Patent number: 5765277
    Abstract: A die bonding apparatus for separating a chip from a tested wafer including a plurality of chips and attaching the chip to a lead frame comprising a chip-transferring part for separating the chip from the wafer and transferring the chip to a place where a lead frame is prepared for die bonding; a stage where the transferred chip is placed; a bond head for compressing the chip and the lead frame to bond them together; and a lead frame-transferring part for transferring the lead frame to a predetermined place, the chip-transferring part being comprised of a first rectilinearly moving picking tool and a second revolving picking tool.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: June 16, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ho Tae Jin, Sung Bok Hong, Jae Ky Roh, Hee Kook Choi
  • Patent number: D528998
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: September 26, 2006
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Young Jae Song, Jae Ky Roh